Year % of total employment (modeled ILO estimate) 1991 1.85287748664716 1992 1.87037335143748 1993 1.8891367188485 1994 1.90855506373858 1995 1.93030001528994 1996 1.95301845002346 1997 1.97661787323747 1998 2.00621512488663 1999 2.03041730623864 2000 2.08606123282987 2001 2.17586423181623 2002 2.1758429678359 2003 2.794281832874 2004 3.02931447065072 2005 2.61921922397611 2006 2.93650296663901 2007 3.26677738724163 2008 3.31856599025773 2009 3.94046357068212 2010 4.10968512410271 2011 4.04441727791361 2012 3.69187870848283 2013 3.7108988605842 2014 4.45865042409143 2015 3.95096600040351 2016 4.44968165698149 2017 3.93117270539905 2018 3.46405958711695 2019 3.20461857511612 2020 1.01252282326036 2021 2.94277021347482 2022 2.76976824025174